A party that will not criticize the incumbent president cannot defeat him, now or two years from now. A party that has nothing to say about unfair tax breaks, a vanishing surplus and a looted economy cannot expect anyone to listen when it asks for votes. A party without passion or vision is hardly a political party at all. Even in their righteous defense of Social Security, Democrats too often sounded as if their chief concern was to preserve their own institutional position. Today the future looks grim for them because they blurred the purposes of their partisanship